Stefan Alfbo

Software developer that is passionate about learning new technologies and solving complex problems. Always trying to be curious and open minded to improve my skills.

Sweden Joined on Sep 7, 2022

Education

KTH Royal Institute of Technology

Work

Software developer

Stefan Alfbo

May 16

Implement PKCS#7 padding

#challenge #100daystooffload #cryptopals #security

3 min read

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Stefan Alfbo

May 15

Gatekeeper One - Level 13

#100daystooffload #ethernaut #solidity #ethereum

5 min read

Stefan Alfbo

May 14

Detect AES in ECB mode

#challenge #100daystooffload #cryptopals #security

3 min read

Stefan Alfbo

May 13

AES in ECB mode

#challenge #100daystooffload #cryptopals #aes

2 min read

Stefan Alfbo

May 12

Break repeating-key XOR

#challenge #100daystooffload #cryptopals

6 min read

Stefan Alfbo

May 11

LangChain Go

#100daystooffload #go #llm #langchain

2 min read

Stefan Alfbo

May 7

Python JSON schema

#100daystooffload #json #django #python

4 min read

Stefan Alfbo

May 5

OWASP Amass

#100daystooffload #tooling #security #osint

2 min read

Stefan Alfbo

May 2

Implementing repeating-key XOR

#challenge #100daystooffload #cryptopals

2 min read

Stefan Alfbo

May 1

The go vet command

#100daystooffload #go #tooling #vet

2 min read

Stefan Alfbo

May 1

Detect single-character XOR

#challenge #100daystooffload #cryptopals

2 min read

Stefan Alfbo

Apr 30

Single-byte XOR cipher

#challenge #100daystooffload #cryptopals

3 min read

Stefan Alfbo

Apr 29

Constructors in Go?

#100daystooffload #go #beginners #programming

2 min read

Stefan Alfbo

Apr 29

Fixed XOR

#challenge #100daystooffload #cryptopals #beginners

2 min read

Stefan Alfbo

Apr 28

Convert hex to base64

#challenge #100daystooffload #cryptopals #crypto

2 min read

Stefan Alfbo

Apr 28

the cryptopals crypto challenges

#challenge #100daystooffload #cryptography #beginners

1 min read

Stefan Alfbo

Apr 15

Write tests for your type definitions

#100daystooffload #typescript #testing #typesafe

2 min read

Stefan Alfbo

Apr 7

git stash

#100daystooffload #git #tooling #stash

2 min read

Stefan Alfbo

Mar 22

Open API with Postman

#100daystooffload #postman #openapi #tooling

2 min read

Stefan Alfbo

Mar 21

Example tests in Go

#100daystooffload #go #testing #programming

3 min read

Stefan Alfbo

Mar 19

Live reloading in Go

#100daystooffload #go #air #reloading

2 min read

Stefan Alfbo

Mar 16

wget - a non-interactive network retriever

#100daystooffload #wget #tooling #cli

2 min read

Stefan Alfbo

Mar 12

Find code in open source projects

#100daystooffload #tooling #programming #productivity

1 min read

Stefan Alfbo

Mar 11

Privacy - Level 12

#100daystooffload #ethernaut #solidity #ethereum

4 min read

Stefan Alfbo

Mar 10

Mock /api/auth/me

#100daystooffload #playwright #testing #auth0

2 min read

Stefan Alfbo

Mar 9

quick.Check in Go

#100daystooffload #go #testing #pbt

4 min read

Stefan Alfbo

Mar 4

func init() {}

#100daystooffload #go #programming

2 min read

Stefan Alfbo

Mar 3

Internal packages in Go

#100daystooffload #go #programming #cleancode

2 min read

Stefan Alfbo

Feb 26

go test <package>

#100daystooffload #go #testing #programming

1 min read

Stefan Alfbo

Feb 25

White box and Black box testing in Go

#100daystooffload #go #testing #programming

3 min read

Stefan Alfbo

Feb 24

How to share a secret

#100daystooffload #cryptography #shamir #fsharp

6 min read

Stefan Alfbo

Feb 24

The modulus operator in .NET

#dotnet #100daystooffload #csharp #fsharp

1 min read

Stefan Alfbo

Dec 28 '23

LWW Register

#100daystooffload #crdt #algorithms #csharp

8 min read

Stefan Alfbo

Dec 27 '23

Elevator - Level 11

#100daystooffload #ethernaut #soldity #ethereum

3 min read

Stefan Alfbo

Dec 26 '23

Foundry - chisel

#100daystooffload #foundry #chisel #solidity

2 min read

Stefan Alfbo

Dec 25 '23

Re-entrancy - Level 10

#100daystooffload #ethernaut #solidity #ethereum

4 min read

Stefan Alfbo

Dec 1 '23

Advent of Code 2023

#100daystooffload #adventofcode #puzzles #programming

1 min read

Stefan Alfbo

Nov 26 '23

Discriminated Unions

#100daystooffload #programming #types #datastructures

1 min read

Stefan Alfbo

Nov 13 '23

Playwright with GitHub Actions

#100daystooffload #playwright #githubactions #testing

2 min read

Stefan Alfbo

Nov 12 '23

LangChain for LLM Application Development

#100daystooffload #llm #langchain #openai

3 min read

Stefan Alfbo

Nov 5 '23

An overview of CRDTs

#100daystooffload #crdt #distributedsystems #algorithms

2 min read

Stefan Alfbo

Oct 28 '23

Django ORM with objects

#100daystooffload #django #orm #python

2 min read

Stefan Alfbo

Oct 24 '23

100 Days To Offload

#challenge #100daystooffload #blog #writing

1 min read

Stefan Alfbo

Oct 17 '23

OCaml, Python and protobuf

#100daystooffload #protobuf #ocaml #python

3 min read

Stefan Alfbo

Oct 15 '23

Introduction to Protocol Buffers

#100daystooffload #protobuf #serializing #beginners

3 min read

Stefan Alfbo

Oct 8 '23

Building Systems with the ChatGPT API

#100daystooffload #course #chatgpt #llm

3 min read

Stefan Alfbo

Oct 5 '23

MinIO as a local S3 service

#100daystooffload #minio #s3 #devcontainer

4 min read

Stefan Alfbo

Oct 1 '23

Conway's Game of Life in F#

#100daystooffload #fsharp #bolero #webassembly

6 min read

Stefan Alfbo

Sep 22 '23

Lovely Silk

#100daystooffload #silk #python #django

2 min read

Stefan Alfbo

Sep 19 '23

SEC-T - 0x0FOO

#100daystooffload #security #conference #hacking

1 min read

Stefan Alfbo

Sep 17 '23

Unit testing with OCaml

#100daystooffload #ounit2 #unittesting #ocaml

3 min read

Stefan Alfbo

Sep 11 '23

King - Level 09

#100daystooffload #ethernaut #solidity #ethereum

3 min read

Stefan Alfbo

Sep 5 '23

Host Storybook on AWS S3

#100daystooffload #storybook #aws #cdk

4 min read

Stefan Alfbo

Sep 2 '23

OWASP Top 10 for LLMs

#100daystooffload #owasp #llm #security

1 min read

Stefan Alfbo

Aug 26 '23

Bastion host in AWS

#100daystooffload #aws #cloud #devops

9 min read

Stefan Alfbo

Aug 24 '23

Resources for learning Zero Knowledge Proofs

#100daystooffload #cryptography #zkp #zeroknowledgeproofs

1 min read

Stefan Alfbo

Aug 23 '23

Chapter 4 of Crafting Interpreters

#100daystooffload #book #ocaml #craftinginterpreters

1 min read

Stefan Alfbo

Aug 21 '23

Vault - Level 08

#100daystooffload #ethernaut #ethereum #solidity

3 min read

Stefan Alfbo

Aug 17 '23

Investigate GitHub Dependabot patches for npm packages

#100daystooffload #github #dependabot #npm

4 min read

Stefan Alfbo

Aug 16 '23

hadolint - Dockerfile linter

#100daystooffload #docker #dockerfile #devops

3 min read

Writing Debut

16 Week Writing Streak

One Year Club

8 Week Writing Streak

4 Week Writing Streak

Want to connect with Stefan Alfbo?